Method of transmitting MBMS data in an E-UTRAN-system

Patent metadata

Field	Value
Publication number	US-9866919-B2
Application number	US-73944010-A
Country	US
Kind code	B2
Filing date	Dec 18, 2007
Priority date	Oct 25, 2007
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

In an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system Multimedia Broadcast Multicast Service (MBMS) data is transmitted as layered data together with control information comprising information enabling a User Equipment to reconstruct the layered MBMS data.

First claim

The invention claimed is:

1. An Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system transmitting Multimedia Broadcast Multicast Service (MBMS) data, the system comprising:
a base station for transmitting the MBMS data as layered data comprising a lower layer in a first transmit stream and a number of higher enhancements layers in a second transmit stream different from the first transmit stream; and
signaling circuitry for transmitting control information comprising signaling that binds together the different layers transmitted in the first and second transmit streams and belonging to the same MBMS service enabling a User Equipment (UE) to reconstruct the layered MBMS data; and
an entity configured to indicate to which layer data transmitted belongs.

2. The system according to claim 1 , wherein the entity for indicating to which layer data transmitted belongs is configured to transmit the indication on the MBMS point-to-multipoint Control Channel (MCCH).

3. The system according to claim 1 , wherein the entity for indicating to which layer data transmitted belongs is configured to transmit the indication via L1/L2 control signaling.

4. The system according to claim 1 , wherein the entity for indicating to which layer data transmitted belongs is configured to transmit the indication in a Media Access Control (MAC) header.

5. The system according to claim 1 , wherein the UE is configured to transmit feedback information relating to the channel quality.

6. The system according to claim 5 , wherein the system is adapted to select transport format based on information relating to the channel quality received from the UE.

7. The system according to claim 6 , wherein the system is adapted to use regular handover measurement reports as input information when selecting transport format.

8. The system according to claim 1 , wherein the system is configured to employ different transport formats or transmit powers, for transmitting the different layers of the MBMS data.

9. The system according to claim 8 , wherein the system is adapted to transmit the higher media layers in the second transmit stream with lower power than lower media layers in the first transmit stream.

10. The system according to claim 1 , wherein, when the system is configured in a Multi Broadcast Single Frequency Network (MBSFN), transmission mode, the system is configured to transmit a base layer or lower layers of the MBMS data in MBSFN mode in a given MBSFN area.

11. The system according to claim 10 , wherein the system is configured to transmit higher layer media components in single cell Point to Multipoint (PTM) mode with or without feedback.

12. The system according to claim 11 , wherein the system is configured to transmit higher layer media components in single cell Point to Multipoint (PTM) mode based on any one or more of the traffic load in a given base station, UE feedback information, or the interference caused to neighbor cells.

13. The system according to claim 11 , wherein the system is configured coordinate the PTM allocations in neighbor cells in order to avoid excessive interference either via base station to base station negotiation or via coordination from a central MBMS Control entity (MCE).

14. A method of transmitting Multimedia Broadcast Multicast Service (MBMS) data Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system, said method comprising:
transmitting the data as layered data comprising a lower layer in a first transmit stream and a number of higher enhancements layers in a second transmit stream different than the first transmit stream;
signaling control information, comprising signaling that binds together the transmission of the different layers in the first and second transmit streams belonging to the same MBMS service, from the system enabling a User Equipment (UE) to reconstruct the layered MBMS data; and
transmitting data indicating to which layer layered data belongs.

15. The method according to claim 14 , further comprising transmitting the data indicating to which layer layered data belongs on the MBMS point-to-multipoint Control Channel (MCCH).

16. The method according to claim 14 , further comprising transmitting the data indicating to which layer layered data belongs is transmitted via L1/L2 control signaling.

17. The method according to claim 14 , further comprising transmitting the data indicating to which layer layered data belongs in a Media Access Control (MAC) header.

18. The method according to claim 14 , further comprising receiving feedback information relating to the channel quality from the UE.

19. The method according to claim 18 , further comprising selecting a transport format based on the feedback information from the UE.

20. The method according to claim 19 , further comprising using regular handover measurement reports as input information when selecting transport format.

21. The method according to claim 14 , wherein different transport formats or transmit powers are used for transmission of different layers of the MBMS data.

22. The method according to claim 21 , wherein higher media layers in the second transmit stream are transmitted with lower power than lower media layers in the first transmit stream.

23. The method according to claim 14 , wherein, when the system is configured in a Multi Broadcast Single Frequency Network (MBSFN), transmitting a base layer or lower layers of the MBMS data in MBSFN mode in a given MBSFN area.

24. The method according to claim 23 , wherein higher layer media components are transmitted in single cell Point to Multipoint (PTM) mode with or without feedback.

25. The method according to claim 24 , wherein higher layer media components are transmitted in single cell Point to Multipoint (PTM) mode based on at least one of a current traffic load for a base station, UE feedback information, or the interference caused to neighbor cells.

26. The method according to claim 24 , wherein the PTM allocations in neighbor cells is coordinated via base station to base station negotiation or via coordination from a central MBMS Control entity (MCE) in order to avoid excessive interference.

27. A base station for use in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system transmitting Multimedia Broadcast Multicast Service (MBMS) data, said base station comprising:
a transmitter for transmitting the MBMS data as layered data comprising a lower layer and a number of higher enhancements layers, wherein the lower layer is transmitted in a first transmit stream, and wherein the number of higher enhancements layers are transmitted in a second transmit stream different from the first transmit stream;
signaling circuitry associated with the transmitter, for transmitting control information comprising signaling that binds together the transmission of the different layers in the first and second transmit streams and belonging to the same MBMS service enabling a User Equipment to reconstruct the layered MBMS data; and
an entity configured to indicate to which layer data transmitted belongs.

28. The base station according to claim 27 , wherein the entity for indicating to which layer layered data belongs is configured to transmit the indication on the MBMS point-to-multipoint Control Channel (MCCH).

29. The base station according to claim 27 , wherein the entity for

Assignees

• Godor Istvan
• Kovacs Akos
• Racz Andras
• ERICSSON TELEFON AB L M (publ)

Inventors

• Godor Istvan
• Kovacs Akos
• Racz Andras

Classifications

• H04W72/30

  Resource management for broadcast services · CPC title

• H04N21/234327

  by decomposing into layers, e.g. base layer and one or more enhancement layers · CPC title

• H04W72/005

  Electricity · mapped topic

• H04L67/322

  Electricity · mapped topic

• H04H20/57

  for mobile receivers · CPC title